The effect of Zn, Ag and Au substitution for Cu in Finemet on the crystallization and magnetic properties

Influence of Zn on Structure and Magnetic Properties of Rapid Quenched (Fe-Zn)-Cu-Nb-Si-B Alloys

“…1, Fig. 2) is a result of rapid solidification process which leads to hinder domain wall movement (magnetocrystalline anisotropy increasing) [9], analogous to the results reported in [6]. The decrease of magnetocrystalline anisotropy (magnetic softening) can be reached by annealing process when the nanostructure is created after (or as a consequence) of structural relaxation process [10].…”

“…The values of coercivity of as-quenched samples (Table) are apparently lower in comparison to the results of [6] (≈ 26 A/m for as-quenched samples). Increasing value of coercivity with higher Zn content can be interpreted as follows: Crystallization of investigated samples (see Fig.…”

“…Annealing is energetically difficult process and production of nanocrystalline ribbons directly by the melt-spinning technique would be much advantageous. It was shown that the addition of Zn to the Fe 73.5 Si 13.5 B 9 Nb 3 Cu 1−x Zn x (x = 0.5, 1) [6] and Zr 65 Al 7.5 Ni 5 Cu 17.5 Zn 5 [7] resulted in crystallization enhancement. In this paper we explore magnetic properties and crystallization as a consequence of rapid solidification process in Fe 73.5−x Zn x Cu 1 Nb 3 Si 13.5 B 9 (x = 1, 3, 5) ribbons employing melt-spinning technique.…”

Crystallisation progress in Si-rich ultra-soft nanocomposite alloy fabricated by melt spinning

“…5 Si 13.5 B 9 Nb 3 Cu 1 amorphous/nanocomposite alloy (FI-NEMET) has been extensively studied by many world-wide researchers [1][2][3][4] due to its excellent soft magnetic properties. Commonly, amorphous alloy is firstly produced as a raw material, and the nanocomposite alloy will be subsequently obtained by appropriate heat treatment for crystallising the nanocrystallite aFe(Si) with suitable volume fraction.…”

The crystallization, magnetic and magnetocaloric properties in Fe76.5−xNbxSi15.5B7Au1 ribbons

“…A small amount of Cu (with melting temperature T m ¼ 1083 1C) to form a-Fe(Si) phase as crystallization nucleation, but Nb with high melting temperature (T m ¼ 2468 1C) ascribed to hinder the grain growth, which are decisive factors to achieve the ultra-soft magnetic properties. In the previous papers, we have studied the influence of Ag, Zn and Au in Finemet [2][3][4] on the properties of ribbons. This article presents study on influence of Nb content substituted for Fe in Fe 76.5Àx Nb x Si 15.5 B 7 Au 1 alloys on their structure, crystallization and properties.…”